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-   -   Which Turbulence Model? (http://www.cfd-online.com/Forums/main/67604-turbulence-model.html)

wilsonudevil August 20, 2009 07:13

Which Turbulence Model?
 
Hi all,

Not sure which turbulence model I should be using!

I'm modelling the flow of air (around 40 to 100 l/s) through a small ventilation unit using CFX

http://i27.tinypic.com/2w3q9o5.jpg

Air velocities are low, less than 1 m/s.

It's about 300 x 300 x 600 mm and contains a copper tube heat exchanger and a filter which I've modelled at pressure drops.

Many thanks for any help!

Killercam October 8, 2009 11:46

Try using the Menter Shear Stress Transport Model.

This uses K-epsilon in the free stream and k-omega near wall - best of both worlds...

Cheers,

Killercam

wilsonudevil October 8, 2009 11:57

I ended up running most of my simulations using either SSG or RNGkEpsilon. Seemed to provide the closest match to my experimental results.

I'll have a look into the turbulence model that you suggest though.

Cheers pal!


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